An item is regularly priced at
$40
. felipe bought it at a discount of
40%
off the regular price. how much did felipe pay?

It would be 60% of the original price, of discount amount in 40%

Then, 40*60 / 100 = 2400/100 = 24

So, he bought the item @ $24

the correct answer is 45x

9×5=45 then add the x

a negative exponent is translated as follows:

so, we have